Image:Ms Cristea's boyfriend, Andrei Burnaz, was intending to propose later on the day of the attack

"After fighting for her life for over two weeks, our beloved and irreplaceable Andreea - wonderful daughter, sister, partner, dedicated friend and the most unique and life-loving person you can imagine - was cruelly and brutally ripped away from our lives in the most heartless and spiritless way," Ms Cristea's family said.

"She will always be remembered as our shining ray of light that will forever keep on shining in our hearts."

After falling from the bridge, Ms Cristea was rescued from the Thames and given treatment on a nearby pier before being taken to hospital.

Her partner, Andrei Burnaz, who suffered a broken foot in the attack, had been planning to propose later that day.

Pushed in a wheelchair, he attended a vigil on Westminster Bridge held last week, placing a single rose at the scene of the attack.

American tourist Kurt Cochran, 54, retired window cleaner Leslie Rhodes, 75, and Spanish teacher Aysha Frade, 44, also died after being struck on the bridge.

PC Keith Palmer, 48, was stabbed in the chest outside the Houses of Parliament by Masood, who was then shot dead by armed police.

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Video:Survivors and Royals attend attack memorial

Ms Cristea's family said they wanted to thank everyone who had helped them in the days since the attack, saying there were "no words to describe the crushing pain and emptiness that is left in our hearts".

"Andreea is now unfortunately not able to have part of the money that was raised for her recovery, so we would like to donate it to charity. She would not have it any other way."